*Beep* Raditz pressed the b.u.t.ton and had the scouter find the highest battle power for him. After a while it found the target.

"That direction…" Raditz mumbled.

Raditz asked Dr. Brief for some more comfortable clothes before leaving. He did not want to look like a hillbilly.

Raditz left Capsule Corporation wearing a dark tank top and a pair of blue shorts.

…

"What an incredible power! I can barely believe what I'm sensing...!" Goku tensed up as he stared into the sky.

"There he is!" A small dot quickly grew in size.

*Tok* Raditz landed in Kame house island.

"We finally meet, Kakarot." Raditz' mind spun furiously as he organized his thoughts.

"Eh?" Goku looked dumbly at Raditz.

"Who's he?" Krillin wondered.

"Kakarot, you look just like our father." Raditz couldn't just come out and say he knew everything there was to Dragon Ball. So he had to pretend meeting Goku for the first time.

"What are you talking about...?" Goku looked confused.

"Kakarot, don't tell me you don't recognize your own elder brother?" Raditz smiled. It was like he was playing a game with Goku, making him more and more confused.

"I'm not Kakarot, I'm Son Goku. You've mistook me for someone else." Goku said.

"Hahaha! Kakarot, tell me. Do you recognize this?" Raditz unwrapped his tail from his waist.

" A tail?!" The group was shocked upon seeing Raditz' tail.

"You have a tail just like the one I used to have!" Goku said, his face still filled with shock.

"Kakarot, what are you playing around for! I am your elder brother, how can you have forgotten your family!" Raditz exaggeratedly clenched his fist in 'anger'.

"I... Have no idea what you're talking about..." Goku said quietly. He was having some doubts on his own.

"Don't tell me you've taken a blow to your head and forgotten everything?!" Raditz yelled.

"It's true, I have a scar. I might have hit my head once, but I was too little to remember." Goku felt the scar on his head.

"Goku. Your grandfather once told me about the time he found a baby in the woods. A baby with a tail. He had a violent disposition and couldn't be tamed by anyone. That is, until that baby accidentally fell down a ravine, hitting his head. The boy nearly died, but pulled through. When he awoke, his violent temper subsided, and he grew into a kindhearted boy..." Master Ros.h.i.+ told the group.

"And that baby was me?" Goku asked.

"Yes." Master Ros.h.i.+ nodded.

"I. You're really my brother?" Goku asked in doubt.

"Goku has got a brother!?" Krillin was shocked.

"That's right." Raditz nodded.

"Then why did you guys abandon me!? Where are my parents? You said I look just like our father!" Goku yelled.

"Dead. All four thousands of our people all died not long after you were born." Raditz said.

"Dead!?" Goku was shocked, he just found out about his parents, but they were already dead.

"F-Four thousands of you people!? Don't tell me each of them also had a tail?!" Bulma was shocked.

"That's right, we're not earthlings. Kakarot, you and I are both Saiyan." Raditz said.

"Saiyan...?" Goku mumbled.

"Saiyan? Not earthling...? G-Goku and you are aliens!? N-No way!" Bulma's eyes widened in shock.

"I- I am an alien...?" Goku was shocked.

"How did the Saiyans die?" Krillin asked.

"We have a lot of time, I don't mind taking it slowly." Raditz motioned his head towards the door. Since he planned to explain a lot, why not relax and take a seat inside the house?

The group went inside and sat down on the couch.

"You haven't introduced yourself yet." Goku said, he still didn't know his own brother's name. After Master Ros.h.i.+'s explanation and Raditz' tail. He already believed Raditz' story.

"My name is Raditz. We Saiyans are a fighting race, we have strong bodies and unlimited potentials. The more we battle, the stronger we become." Raditz explained.

"No wonder Goku is so strong!" Krillin exclaimed.

"But that isn't all! What makes us really frightening is... Zenkai! What doesn't kill us, makes us stronger. Each time we experience a near death and recover, our power greatly enhanced. As I've said before, the more we battle, the stronger we become. Even normal injuries after recovering will increase our power, but the more severe the wounds, the greater the improvements." Raditz explained.

"Isn't that cheating?!" Krillin yelled in envy.

"Doesn't that mean you Saiyans are the strongest? If you just keep injuring yourselves and heal up, you would be unkillable. How did your race get destroyed?" Bulma asked confused.

"It doesn't work that way, self-inflicted wounds does not boost our powers. Simply recovering from injuries without battles will have diminished returns, we Saiyans imprint the experiences from the battles and injuries we receive. He are highly adaptable and are quick learners." Raditz said.

"No wonder I felt I become so much stronger after my battle with Piccolo..." Goku had been severely injuried, his body crippled and a large gaping hole in his chest during his battle against Piccolo in the WMA(World Martial Arts) Tournament. After eating a senzu bean, he fully recovered and had his powers improved.

"We can talk about our race's destruction later. We have more trouble coming." What was most important is surviving Vegeta's rage. He did not tolerate betrayers and was certain to come to Earth sooner or later to find out the reason Raditz' scouter stopped sending back information.

"Trouble?" Goku wondered.

"Our race are evil, but don't get me wrong. Not everyone of us Saiyans are evil. We worked for Frieza, the ruler of the universe. Frieza's forces scour s.p.a.ce for suitable planets to live in and exterminate all the native species before selling it to other races. Naturally, as we Saiyans worked for Frieza, we also did the same." Raditz said. These matters would be found out sooner or later anyway.

"T-This is horrible! You guys are just s.p.a.ce pirates!" Krillin yelled.

"Like I said, not all Saiyans are evil, while the majority of the Saiyans partake in such missions, there are also Non-combatant Saiyans who does not fight or kill. Our home planet, Planet Vegeta had a cruel environment to live, the gravity is 10x Earth's. King Vegeta was a cruel, selfish and heartless b.a.s.t.a.r.d. All babies have their battle power measured, if you are born with a battle power too low, you'll be deemed unfit as a warrior. You're not even allowed to stay on our home planet, most of these babies are sent to low-level planets as infiltration babies not long after they were born. Only if you survive and take over the planet are you allowed to return to our home planet and become a warrior. But the survival rate is pitifully low. The reason our race has such a low population is because many of us warriors already die in combat, but to send of so many babies, how could our race's population ever flourish?" Raditz clenched his fist in anger. He did not know what had gotten in him, but he felt anger when he thought of these matters.

"That's horrible! How can you send so many babies to their death! They don't even a choice in choosing either! How can your King be so heartless, that is forcing them to either kill off all the inhabitants in a planet or die!" Bulma felt sympathy.

"Doesn't that mean... Goku was an infiltration baby!?" Krillin was shocked.

"That's right, my little brother was born with a battle power of 2 and was deemed unfit as a warrior and sent to Earth, his mission was to exterminate the humans, once finished, he would be allowed to return back to our home planet. But not long after he was sent off, our home planet was destroyed. In a way, it was lucky Kakarot ended up here." Raditz nodded.